| Business | Phone |
| Bennett & Hall Construction Co 607 Perry Hwy, Harmony 16037 | (724) 452-6561 |
| Hulbert Concrete Constructions 103 Hillside Dr, Harmony 16037 | (724) 368-3040 |
| Mars General Construction 758 Spring St, Harmony 16037 | (724) 452-9888 |
| Meinert Well Drilling Inc 468 Perry Hwy, Harmony 16037 | (724) 452-8337 |
| Meyer Builders Inc 908 Perry Hwy, Harmony 16037 | (724) 368-9544 |
| Schneider Services Inc 102 Joshua Dr, Harmony 16037 | (724) 368-0166 |
| Sunrise Commercial Contracting 57 Scott Ridge Rd, Harmony 16037 | (724) 452-8640 |
| Tom Rectenwald Construction 206 Camp Run Rd, Harmony 16037 | (724) 452-8801 |